diff --git a/common/src/daudio_latency_test.cpp b/common/src/daudio_latency_test.cpp
index d88024b95ae6b8f656a77bf4e3b3f4785b99d10b..ab420fd0750a1c63671bfaa3f2a166af3a0eb292 100644
--- a/common/src/daudio_latency_test.cpp
+++ b/common/src/daudio_latency_test.cpp
@@ -24,10 +24,11 @@
 
 #undef DH_LOG_TAG
 #define DH_LOG_TAG "DAudioLatencyTest"
-
 namespace OHOS {
 namespace DistributedHardware {
 IMPLEMENT_SINGLE_INSTANCE(DAudioLatencyTest);
+constexpr int32_t MAXSIZE = 8192;
+
 DAudioLatencyTest::DAudioLatencyTest()
 {
     DHLOGI("DAudioLatencyTest constructed.");
@@ -69,6 +70,10 @@ int32_t DAudioLatencyTest::AddRecordTime(const int64_t recordBeepTime)
 
 bool DAudioLatencyTest::IsFrameHigh(const int16_t *audioData, const int32_t size, int32_t threshhold)
 {
+    if (size > MAXSIZE) {
+        DHLOGI("size=%{public}d is over range", size);
+        return false;
+    }
     int32_t max = 0;
     for (int32_t i = 0; i < size; i++) {
         int16_t f = abs(audioData[i]);
diff --git a/common/test/unittest/src/daudio_utils_test.cpp b/common/test/unittest/src/daudio_utils_test.cpp
index 37b60bc9964e467b120f1edd78e2492e207f8e68..7c2eb220461fa034c4fae8f4ff14b94af8ba6c23 100644
--- a/common/test/unittest/src/daudio_utils_test.cpp
+++ b/common/test/unittest/src/daudio_utils_test.cpp
@@ -164,6 +164,7 @@ HWTEST_F(DAudioUtilsTest, DAudioUtilTest_002, TestSize.Level1)
     cJSON_AddStringToObject(jsonObj, "one", "one");
     cJSON_AddNumberToObject(jsonObj, "two", 2);
     CJsonParamCheck(jsonObj, keys);
+    cJSON_Delete(jsonObj);
 
     int64_t tvSec;
     int64_t tvNSec;
diff --git a/interfaces/inner_kits/native_cpp/test/fuzztest/sinkproxyinitsink_fuzzer/sinkproxyinitsink_fuzzer.cpp b/interfaces/inner_kits/native_cpp/test/fuzztest/sinkproxyinitsink_fuzzer/sinkproxyinitsink_fuzzer.cpp
index 465eeb8031fca606d6075b034af4249814b3b1d3..84fc5dcfb54eb7bb2fc6a7515815e2c36af7cb76 100644
--- a/interfaces/inner_kits/native_cpp/test/fuzztest/sinkproxyinitsink_fuzzer/sinkproxyinitsink_fuzzer.cpp
+++ b/interfaces/inner_kits/native_cpp/test/fuzztest/sinkproxyinitsink_fuzzer/sinkproxyinitsink_fuzzer.cpp
@@ -41,7 +41,7 @@ void SinkProxyInitSinkFuzzTest(const uint8_t* data, size_t size)
         return;
     }
     std::shared_ptr<DAudioSinkProxy> dAudioProxy = std::make_shared<DAudioSinkProxy>(remoteObject);
-    sptr<DAudioSinkIpcCallback> dAudioSinkIpcCallback = new DAudioSinkIpcCallback();
+    sptr<DAudioSinkIpcCallback> dAudioSinkIpcCallback(new DAudioSinkIpcCallback());
     dAudioProxy->InitSink(params, dAudioSinkIpcCallback);
 }
 }
diff --git a/interfaces/inner_kits/native_cpp/test/fuzztest/sourceproxyinitsource_fuzzer/sourceproxyinitsource_fuzzer.cpp b/interfaces/inner_kits/native_cpp/test/fuzztest/sourceproxyinitsource_fuzzer/sourceproxyinitsource_fuzzer.cpp
index 18edf117f69a5bb1f83161a715aefa315a7389b5..0ca487bdac62aa6832d8f0970f26da21695e65f8 100644
--- a/interfaces/inner_kits/native_cpp/test/fuzztest/sourceproxyinitsource_fuzzer/sourceproxyinitsource_fuzzer.cpp
+++ b/interfaces/inner_kits/native_cpp/test/fuzztest/sourceproxyinitsource_fuzzer/sourceproxyinitsource_fuzzer.cpp
@@ -42,8 +42,8 @@ void SourceProxyInitSourceFuzzTest(const uint8_t* data, size_t size)
         return;
     }
     std::shared_ptr<DAudioSourceProxy> dAudioProxy = std::make_shared<DAudioSourceProxy>(remoteObject);
-    sptr<IDAudioIpcCallback> callback = new DAudioIpcCallback();
-    
+    sptr<IDAudioIpcCallback> callback(new DAudioIpcCallback());
+
     dAudioProxy->InitSource(params, callback);
 }
 }